Green’s Dictionary of Slang

geek v.1

[geek n.1 ]
(US black/drugs)

1. (also geek out) to experience severe symptoms of heroin withdrawal.

[US]H. Gold Man Who Was Not With It (1965) 25: What if I went and geeked out on you? What about this here fever I had?

2. ; also to deal obsessively with surrounding inanimate objects after a binge on strong amphetamine drugs.

[US]L. Pettiway Workin’ It 133: If I’m geeked, I might drink some milk, you know.
[US]Ebonics Primer at www.dolemite.com 🌐 geekin Definition: the typical psychomotor reaction exhibited by a crack user; exemplified by facial tics, repeated lip-chewing, prolific window-checking, and carpet-prospecting. Example: Aw, hell nah, that muthafuckin Clarence suckin’ the devil’s dick again, geekin like a muthafucka and shit.
[US]ADS-L 26 Mar. 🌐 More recently I heard the term ‘geeking out’ used to describe the state of going around sniffing, tasting and feeling everything in sight that people go through after a binge on methamphetamine or similar drugs.

3. (orig. computing/US campus, also geek out) to devote oneself to one’s own (computing, obsessive) pursuits in an environment where such pursuits are disdained.

[US]Eble Campus Sl. Oct. 4: geek [...] not acting socially acceptable: We geeked and studied last night. geek out – study hard, particularly in physics or computer science.
[US]Eble Sl. and Sociability 30: In college slang out is the most productive particle: [...] geek out ‘study hard’.
G. Branwyn posting at ADS-L 6 Dec. 🌐 Geek out is old hacker slang. It’s in one of Raymond’s early Jargon Files, I believe. The usage there concerned doing something geeky in a non-geek context, such as playing on someone’s home computer during a party.
[US]ADS-L 26 Mar. 🌐 Geeking out is also hacker slang for indulging in techno-lust, playing with computers or other tech gadgets at an inappropriate time (e.g. at a social event), or any form of tech indulgence that non-techies may not understand.

4. (US campus, also geek out) to act stupidly, or in a way that counters the cultural norm.

[US]Eble Campus Sl. Mar.
[US]Da Bomb 🌐 12: Geekin’ or Geeking: Performing actions in the form of a geek (fool).
Online Sl. Dict. 🌐 geek v 1. to display an embarrassing amount of happiness. (‘She geeked when he asked her out.’).
[US]ADS-L 27 Mar. 🌐 You didn’t have to be a druggie to geek out though. If someone who didn’t fit in got into a rage or acted out in some way, they were geeking out. Also if someone who did fit in acted out in some way that was considered geek-like, they would be teased for geekin’ out.
C. von Ziegesar Cobble Hill 216: ‘The mystery is gone. I decided to completely geek out on you’ .

5. (US) to fool someone, to render stupid.

[US]‘Randy Everhard’ Tattoo of a Naked Lady 195: She geeked you, boy! [...] My baby doll geeked you good!

6. to yearn, to desire greatly.

[US]Woods & Soderburg I Got a Monster 228: He was geeking to share his role in this incredible tale.

In derivatives

geeked up (adj.)

(drugs) intoxicated by a drug, usu. cocaine.

B.A. Jacobs Dealing Crack 72: They might be so geeked up they try to pull off with the shit. They be ’noid [paranoid] with us, so we gotta be ’noid with them.
K. Curtis My Elegant Barnyard 298: By the time we arrived we were all so geeked up we didn't know straight up from sickum.
X.T. Thornton I Had Give Up [ebook] I got geeked up on cocaine and alcohol, going into the probation office [...] telling all the probation officers, ‘I’m going to kill everybody’.
K. Smith God Bless My Rudeboy 4: I could tell by Doodle’s composure and his speech that he was high, or as we say in Georgia, ‘geeked up’.
L. Dewey Unfinished Death 8: ‘If you’re geeked up on meth, at least cut me in on some.’ ‘I’m not doing meth, Mike! It interferes with my job description’.